having a discussion with mr.barnard and he suggested i drop in a link to the recent google accessibility mooc - https://webaccessibility.withgoogle.com/course
http://webstandardssherpa.com/ -http://tink.co.uk/ - http://html5doctor.com/ also great for this.
the mooc is very chromevox centric and jaws ect have a fair bit to catchup on in terms of implementing a lot of it, but great to do.